Core for building-blocks.



' No. 879,066 r j PATENTED'FEB 11', 1908.

E. RHODES.

00m: FOR BUILDING BLOCKS.

AYP'LiOATION FILED JULY 25.1906.

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[UWA 4.27 A #01768. 2X H1 case's UNITED STATES PATENT oF ron. A

EDWARD RHODES, OF DRESDEN, OHIO, ASSIGNOR OF ONE-HALF TO JOHN W.-P. ,R E ID, OF

DRESDEN, OHIO.

CORE FOR BUILDING-BLOCKS.

' Specification of Letters Patent.

Patented M111, 1908.

Application filed July 25. 1906- Serial No. 327.646.

in building blocks and core therefor, and

particularly to that class known as concrete locks usually formed in molds. .The main object of the invention is the production of a block comprising means integral with the block for supporting and reinforcin the binding agent used in connection wit the block, said means being so constructed as to eliminate all possibilit of the bindi agent becoming dislodged rom its fiprmka position and alling between the Another ob'ect is'to produce a block which shall possess t e advantage above mentioned .and at the same time allow perfectly free circulationof 'airin all directions in the intenor of the block, thus insuring a practically dry Wall, a condition conducing greatly to the strength and life of astructure and therefore much desired.

Another object of the invention is theproduction of a block which shall be as efficient and convenient in forming corners and angles as it is in straight wall construction and which shall require a less amount of mortar or other bindin agent than is usually required by blocks of this class.

The invention will first be described in the following specification, taken in connection with the accom anying drawings, and then pointed out in t e claims.

In the drawings, Figure 1 is a perspective of my improved block. Fig.2 is a central, longitudinal section of a tier of blocks constructed according to my invention in position as units of part of a wall. Fig. 3 is a perspective of the core used in molding the interior of the block. Fig. 4 is a central, longitudinal section of the same, and Fig. 5

is a top plan of the same.

Referring now to the drawings, in which like reference numerals refer to like parts throughout the sevoral views, 1 denotes a block constructed. according to my invention and comprising an approximately rectilinear hollow structure with front wall 2, rear wall 3 and end walls 4 and 5 respectively. The

r and 2.

purpose hereinafter set forth. Formedintegral with the block and joining the front and rear walls thereof is a V-shaped bridge 7, extending about-one-half the depth of the block with its apex toward the bottom face of the same and having its upper face lying in a plane coincident with the plane of the upper face of the block, as shown in Figs. 1

exterior faces 6 of both end walls are formed slightly concave, as shown in Fig. 1, for a 8 represents the core used in forming the interior of the block and comprises a hollow structure approximately oval in cross section and of such dimensions as to of desiredsize.

9 denotes a bridge-forming notch cut from theupper face 10 toward the lower face 11 of the 'core a sufficient distance and of such configuration as to provide for forming the bridge produce a block 7 of predetermined shape and dimensions, in molding the block. 12 denotes inwardly-projecting lugs formed integral with the sides of the core near the upper face thereof and are adapted to be engaged by a removing tool in separating the 'core and block after the latter has been molded. 1

Informing the block, sufficient of plastic material desired is put intoa mold, the face of which may be, if required, of such desi n as to imitate rock, chiseled stone, etc., tie core inserted with its notch 9 uppermost in the center of the mold, the remaining quantity of material necessar put into the mold and thoroughly tampe around the core which, when the material is sufficiently set, is removed by means of a removing tool through the agency of lugs 12, when the core.

may, of course, be used in forming another block.

In using the blocks as units in structures, a ground row is laid in ordinary manner with the binding agent placed on walls 2, 3, '4 and 5, as usual, and also in the space formed between the end walls of the blocks by the concave faces 6 of said ends. The row of blocks next above is arranged in the same relative longitudinal position as the row below it but is so spaced as to bring the mortarplaced between the faces 6 of any two contiguous blocks in the upper row directly above the bridge 7 of the block immediately below them, as shown in Fig. 2, when, as will be obvious, all tendency of the mortar between the faces 6 to fall into the block below will beovercome, it being effectively supported and securely held in normal positlon by the bridge 7 of the block below it, while at the same time less mortar will be required between said faces than ordinaril due' to their concave formation which wi also overcome any pos-- throughout its length that portion of the binding a ent l 'n conti ous the longitudinal face of thla b ock.

It will be noted that the core is of oval form and of hollow construction and that the bridge-forming members or walls, by virtue of their relative dis ositions, act as a most effective brace for t e wall of the core and prevent its collapse or distortion under continuedreuse. r

It will be a parent from the above that I have provided a stron easily molded block and simple core, the b ock possessing the desired advantages of supporting and holding inplace the mortar used in connection therewith and "of allowing unim eded circulation of-air in all directions and w ich requires but a. small. amount of bindin agent in either plane construction or ang e work.

While I have shown and described the'core 8 as hollow, it is to be understood that, if desired, it can be provided with an upper wall, I to enable ready manipulation of the plastic i material in filling the mold.

Having thus described the invention, what is claimed as new is 1. A core for forming the opening in building blocks, com rising a hollow metallic i body having eac side wall formed with a V-shaped depression, and walls connecting the transversel .-alined edges of both said depressions,'sai de ressions opening through one edge of the b0 y walls and being of less depth than the depth of thebody.

2. A core for forming the opening in building blocks, corn rising a hollow metallic body having eac side wall formed with a V-shaped depression, and walls connecting the transversely-alined edges of both of said depressions, said de ressions opening through 5 one edge of the b0 y walls andbeing of less depth than the depth of the body, and removing lugs projecting inwardly from the body walls in alinement with the depressions.

3. A core for building blocks comprising a 5 metallic wall arranged 1n rounded configuration, and a V-sha ed section bridging thespace inclosed byt e wall.

4. A core for building blocks comprising a hollow body of oval configuration, and a V-shaped section bridging the opening in said bod said section opening through the wall of t e body to formV-shaped recesses therein.

5. Agcore for building blocks comprising a hollow body of oval configuration; a V- sha ed section bridging the space included within the body and comprisin relatively inclined walls terminating at their spaced edges in alinement with one edge of the body wa 1, said wall bein cutaway to form recesses to register wit the space included between the inclined walls.

In testimony whereof I afiix my signature in presence of two witnesses.

, EDWARD RHODES I Witnesses JOHN W. P. REID, FRANK D. SNYDER. 

